APA (7th ed.) Citation

Dryer, C. R. (1901). Lessons in physical geography. American Book Company.

Chicago Style (17th ed.) Citation

Dryer, Charles Redway. Lessons in Physical Geography. New York: American Book Company, 1901.

MLA (9th ed.) Citation

Dryer, Charles Redway. Lessons in Physical Geography. American Book Company, 1901.